Besides
Valgetal and Matego, our star programs, we have developed
some more educational software. The programs are suitable
for high schools, and perhaps elementary schools, for
students aged between about 11 and 17 years. They could
of course also be used at home, to be a help with the
homework.

Powers
of Ten
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Learn how
to write powers of ten as decimal numbers, how to
multiply and divide powers of ten, how to multiply with
the square root and how to raise a power to a power to
ten. There are seven different exercises. Also is it
possible to play for a High Score, which will surely
increase the motivation!

You'll
receive the file: "PWten.zip (51 KB). After
unzipping you can make a shortcut to your desktop of the
main program Pwten.exe.
The software will work on almost every PC! (286, Pentium,
Msdos, Windows 3.1, 9x, XP etc.)

ABC-Formula

Unique
educational program in which you learn how to resolve
second grade equations. If you
want you can even deduce the formula.

ABCForm.zip,
72 kb, no install but easy to install (just create a
shortcut to your desktop). The program is at this moment
only available in Dutch, but perhaps it´s still possible
to use it..

Linear
Equations

These are
equations involving only one variable, like x, and
nothing complicated like powers or square roots. With
this special educational program you learn how to resolve
them. In four different exercises you make use of the
following rules:

To solve
an equation you may
1) divide both parts of the equation by the same number;
2) multiply both parts by the same number;
3) add the same number to both parts;
4) subtract the same number from both parts;
5) you may not divide by zero or multiply;
6) move terms from one part to the other part, but only
if you
change the sign of those terms.

Like in
our other programs, you hardly have to use pen and paper,
and the exercises are not simply "questions with an
answer", but a special kind of
"dynamic-game-like-mathematics".

To
challenge your knowledge, you can play
"Valgebra": By manoeuvring the falling x-terms
and numbers, you resolve an equation. But take care.., if
you make a mistake, you are penalised by a
reduction in the size of the container, which immediately
makes it harder to control successive terms precisely!

You'll
receive the file: "Equation.zip" (73 KB). After
unzipping you can create a shortcut to the desktop of
your computer of Equation.exe . The software will work on
almost every PC! (286, Msdos, Windows 3.1, 9x, XP etc.)